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Title: Coherent lepton pair production in hadronic heavy ion collisions

Recently, significant enhancements of e +e - pair production at very low transverse momentum (p T < 0.15 GeV/c) were observed by the STAR collaboration in peripheral hadronic A+A collisions. This excesses can not be described by the QGP thermal radiation and Rho in-medium broadening calculations. This is a sign of coherent photon-photon interactions, which were conventionally studied only in ultra-peripheral collisions. Here in this article, we present calculations of lepton pair (e +e - and μ +μ -) production from coherent photon-photon interactions in hadronic A+A collisions at RHIC and LHC energies within the STAR and ALICE acceptance.
Authors:
ORCiD logo [1] ;  [2] ;  [1] ;  [3] ;  [2]
  1. Univ. of Science and Technology of China, Hefei (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Shandong Univ., Jinan (China)
Publication Date:
Report Number(s):
BNL-203543-2018-JAAM
Journal ID: ISSN 0370-2693
Grant/Contract Number:
SC0012704; 2014CB845400; 2016YFE0104800; 11505180; 11775213; 11720101001
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 781; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1434000